[PSUBS-MAILIST] onboard gear

[Rick Patton via Personal_Submersibles]

Sean,

I was trying to convey that my friend knows how to figure out partial
pressures ( I used to ) and what different gasses do and why you would want
to use them for an exact reason. Hope I never have to use the bailout
though!!
Rick

On Mon, Apr 22, 2019 at 11:42 AM Sean T. Stevenson via
Personal_Submersibles <personal_submersibles at psubs.org> wrote:

> Saturation is a different animal entirely.  In sat, your PPO2 is likely
> kept below 0.4 atm because of the indefinite exposure duration, and your
> excursion limits change as opposed to surface-oriented (bounce) diving.  A
> sub escape is ideally a really rapid bounce, blowing down as fast as you
> can equalize, locking out and ascending as fast as possible when deep, and
> if at all possible, slowing down a bit as you approach the surface.
> Getting on 100% oxygen once you have surfaced is going to be a big help for
> survivability too. As you say though, blown eardrums (barotrauma), bends
> (decompression sickness), hypothermia and all the rest are secondary
> considerations to just getting the hell out and getting to air.
>
> Sean
>
>
>
>
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Monday, April 22, 2019 2:09 PM, Rick Patton via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> I have a friend that I keep in contact with that was a rack operator back
> in the day that mixed the gas for the sat systems that I used to be in and
> was going to have him do the math to get the proper mix and gases so that I
> wouldn't have the 02 toxicity problems that you speak of. As long as you
> don't go lower than the 16% PP02 to sustain life and you don't dilly dally
> at depth which you wouldn't, it should be fine. My flood valve is 2" ID so
> should flood sub quite quickly but probably going to come away with blown
> eardrums even though I am really good at clearing my ears. My bailouts are
> also 30 Cu. Ft.
> Rick
>
>
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20190422/31119252/attachment.html>